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題名 | 叢枝菌根菌Glomus Mosseae對鋅污染土壤培育相思樹苗木生長之效應=Effects of Glomus Mosseae on Growth of Acacia Confusa Seedlings Cultured on Zinc Contaminated Soil |
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作者 | 彭靖媛; 李明仁; | 書刊名 | 國立臺灣大學生物資源暨農學院實驗林研究報告 |
卷期 | 21:1=255 2007.03[民96.03] |
頁次 | 頁1-13 |
分類號 | 430.16341 |
關鍵詞 | 叢枝菌根菌; 鋅; 重金屬污染; 相思樹; 生長; Glomus mosseae; Arbuscular mycorrhizal fungus; Zinc; Heavy-metal contamination; Acacia confusa; Growth; |
語文 | 中文(Chinese) |
中文摘要 | 本研究旨在探討接種叢枝菌根菌對鋅重金屬污染土壤培育相思樹苗木生長之效應。本研究自嘉義縣水上鄉廢耕稻田之稻苗根圈土壤分離鑑定叢枝菌根菌Glomus mosseae,經繁殖後接種至相思樹苗木,2個月後再分別以不同鋅濃度處理。接種6個月後,觀察不同鋅濃度處理對接種苗與未接種苗木之苗高生長量、根頸直徑生長量、總乾重、S/R率、假葉面積、假葉片數及葉綠素濃度之影響。研究結果顯示,G. mosseae可與相思樹苗木根部形成良好之共生組合。不同鋅濃度處理對接種苗與未接種苗之抑制作用,隨鋅濃度之增加而增強。在對照組(鋅濃度0 μg/g土壤),接種苗淨高生長量64.33±1.40cm為非接種苗者42.23±0.40 cm之1.52倍,接種苗淨根頸直徑生長量7.86±0.56mm為非接種苗者5.84±0.49mm之1.35倍,接種苗全株乾重36.40±4.62g為非接種苗者21.73±0.90g之1.68倍;鋅濃度300μg/g土壤處理時,接種苗淨高生長量48.17±1.91cm為非接種苗者38.87±1.67cm之1.24倍,接種苗淨根頸直徑生長量6.00±0.59mm為非接種苗者4.74±0.19mm之1.27倍,接種苗全株乾重22.24±0.69g為非接種苗17.51±1.07g之1.27倍;鋅濃度600μg/g土壤處理時,接種苗淨高生長量38.40±1.54cm為非接種苗者29.93±2.23cm之1.28倍,接種苗淨根頸直徑生長量5.05±0.38mm為非接種苗者4.04±0.31mm之1.25倍,接種苗全株乾重14.46±0.80g為非接種苗者6.69±0.95g之2.16倍;但在1000μg鋅濃度時,接種苗與非接種苗生長遲滯而終至枯死。本研究證實叢枝菌根菌G. mosseae可有效增進相思樹苗木在鋅重金屬污染土壤之生長。 |
英文摘要 | The purpose of this study was to explore the effects of inoculation with arbuscular mycorrhizal fungi (AMF) on the growth of seedlings of Acacia confusa (Taiwan acacia) on soil polluted by zinc heavy metal. Taiwan acacia seedlings were grown in sterilized soils, and inoculated with a dominant AMF, i.e., Glomus mosseae, isolated from rhizospherical soil of rice seedlings in an abandoned rice field of Shuei-shang Township, Chiayi County. 2 months later, inoculated and non-inoculated Taiwan acacia seedlings were subjected to treatments of different concentrations of zinc heavy metal. Six months after inoculation, the seedling height growth, root collar diameter, total dry weight, S/R ratio, phyllodia area, phyllodium number, and chlorophyll concentration were measured and analyzed. The results showed that G. mosseae could symbiose with roots of Taiwan acacia seedlings, and the growth inhibition on seedlings increased as zinc concentration increased. Under control treatment (0 μg Zn/g soil concentration), the net height growth of inoculated seedlings (64.33 ± 1.40 cm) was 1.52 times of that of non-inoculated ones (42.23 ± 0.40 cm); the net root collar diameter growth of inoculated seedlings (7.86 ± 0.56 mm) was 1.35 times of that of non-inoculated ones (5.84 ± 0.49 mm); the dry weight of inoculated seedlings (36.40 ± 4.62 g) was 1.68 times of that of non-inoculated ones (21.73 ± 0.90 g). Under 300 μg Zn/g soil concentration, the net height growth of inoculated seedlings (48.17 ± 1.91 cm) was 1.24 times of that of non-inoculated ones (38.87 ± 1.67 cm); the net root collar diameter growth of inoculated seedlings (6.00 ± 0.59 mm) was 1.27 times of that of non-inoculated ones (4.74 ± 0.19 mm); the dry weight of inoculated seedlings (22.24 ± 0.69 g) was 1.27 times of that of non-inoculated ones (17.51 ± 1.07 g). Under 600 μg Zn/g soil concentration, the net height growth of inoculated seedlings (38.40 ± 1.54 cm) was 1.28 times of that of non-inoculated ones (29.93 ± 2.23 cm); the net root collar diameter growth of inoculated seedlings (5.05 ± 0.38 mm) was 1.25 times of that of non-inoculated ones (4.04 ± 0.31 mm); the dry weight of inoculated seedlings (14.46 ± 0.80 g) was 2.16 times of that of non-inoculated ones (6.69 ± 0.95 g). Under 1000 μg Zn/g soil concentration, the inoculated and non-inoculated seedlings grow slowly, and died eventually. This study demonstrated that G. mosseae could effectively increase the growth of Taiwan acacia seedlings on zinc heavy metal polluted soil. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。